makepasswd generates true random passwords by using the /dev/urandom feature of Linux, with the emphasis on security over pronounceability. It can also encrypt plaintext passwords given on the command line.

makepasswd Installation:
Open the terminal and type following command to install makepasswd:

sudo apt-get install makepasswd

After successful installation you can use the makepasswd using following command, here I am generating 10 diffferent passwd having character length 10

For more detail options type command makepasswd --help or check the man pages